class RealTimeQuery:
    def __init__(self):
        self.auth = None

    def set_authentication(self, auth):
        self.auth = auth

    def multi_thread_query(self):
        """同时监控10+个车次余票状态"""
        pass

    def smart_refresh_strategy(self):
        """动态调整请求频率(5-30秒/次)"""
        pass

    def train_filter(self):
        """按时间/车型/座位类型进行筛选"""
        pass